package com.example.weather_location_service.fragment;

import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

import com.example.weather_location_service.MainActivity;
import com.example.weather_location_service.R;
import com.example.weather_location_service.WeatherActivity;
import com.example.weather_location_service.database.City;
import com.example.weather_location_service.database.County;
import com.example.weather_location_service.database.Province;
import com.example.weather_location_service.util.HttpUtil;
import com.example.weather_location_service.util.Utility;

import org.jetbrains.annotations.NotNull;
import org.litepal.LitePal;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

public class ChooseAreaFragment extends Fragment {
    View view;
    Context context;
    private TextView titleText;
    private Button backButton;
    private ListView listView;
    public static final int LEVEL_PROVINCE = 0;
    public static final int LEVEL_CITY = 1;
    public static final int LEVEL_COUNTY = 2;
    private ProgressDialog progressDialog;
    private ArrayAdapter<String> adapter;
    private List<String> dataList = new ArrayList<>();
    /*
    省列表
     */
    private List<Province> provinceList;
    /*
    省市列表
     */
    private List<City> cityList;
    /*
    县列表
     */
    private List<County> countyList;
    /*
    选中的省份
     */
    private Province selectedProvince;
    /*
    选中的市
     */
    private City selectedCity;
    /*
    选中的级别
     */
    private int currentLevel;


    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.choose_area, container, false);
        context = getContext();
        initView();
        adapter=new ArrayAdapter<>(getContext(),android.R.layout.simple_list_item_1,dataList);
        listView.setAdapter(adapter);
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int postion, long id) {
                if (currentLevel==LEVEL_PROVINCE){
                    selectedProvince=provinceList.get(postion);
                    queryCities();
                }else if (currentLevel==LEVEL_CITY){
                    selectedCity=cityList.get(postion);
                    queryCounties();
                }else if (currentLevel==LEVEL_COUNTY){
                    String weatherId = countyList.get(postion).getWeatherId();
                    if (getActivity()instanceof MainActivity){
                        Intent intent=new Intent(getActivity(),WeatherActivity.class);
                        intent.putExtra("weather_id",weatherId);
                        startActivity(intent);
                        getActivity().finish();
                    }else if (getActivity()instanceof WeatherActivity){
                        WeatherActivity activity=(WeatherActivity)getActivity();
                        activity.drawerLayout.closeDrawers();
                        activity.swipeRefrsh.setRefreshing(true);
                        activity.requestWeather(weatherId);
                    }

                }
            }
        });
        backButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (currentLevel==LEVEL_COUNTY){
                    queryCities();
                }else if (currentLevel==LEVEL_CITY){
                    queryProvinces();
                }
            }
        });
        queryProvinces();
    }
/*
查询权所有的省，优先从数据库查询，如果没有查询到再去服务器上查询
 */
private void queryProvinces(){
    titleText.setText("中国");
    backButton.setVisibility(View.GONE);
    provinceList= LitePal.findAll(Province.class);
    if (provinceList.size()>0){
        dataList.clear();
        for (Province province:provinceList) {
            dataList.add(province.getProvinceName());
        }
        adapter.notifyDataSetChanged();
        listView.setSelection(0);
        currentLevel=LEVEL_PROVINCE;
    }else {
        String adress="http://guolin.tech/api/china";
        queryFromServer(adress,"province");
    }
}
/*
查询选中省内的所有市，优先从数据库查询，如果没有查询到再去服务器上查询
 */
private void  queryCities(){
    titleText.setText(selectedProvince.getProvinceName());
    backButton.setVisibility(View.VISIBLE);
//    List<Song> songs = LitePal.where("name like ? and duration < ?", "song%", "200").order("duration").find(Song.class);
    cityList=LitePal.where("provinceId=?",String.valueOf(selectedProvince.getId())).find(City.class);
    if (cityList.size()>0){
        dataList.clear();
        for (City city:cityList) {
            dataList.add(city.getCityName());
        }
        adapter.notifyDataSetChanged();
        listView.setSelection(0);
        currentLevel=LEVEL_CITY;
    }else {
        int provinceCode=selectedProvince.getProvinceCode();
        String address="http://guolin.tech/api/china/"+provinceCode;
        queryFromServer(address,"city");
    }
}
/*
查询选中市内的所有县，优先从数据库查询，如果没有查询到再去服务器上查询
 */
private void  queryCounties(){
    titleText.setText(selectedCity.getCityName());
    backButton.setVisibility(View.VISIBLE);
    countyList=LitePal.where("cityId=?",String.valueOf(selectedCity.getId())).find(County.class);
    if (countyList.size()>0){
        dataList.clear();
        for (County county:countyList) {
            dataList.add(county.getCountyName());
        }
        adapter.notifyDataSetChanged();
        listView.setSelection(0);
        currentLevel=LEVEL_COUNTY;
    }else {
        int provinceCode=selectedProvince.getProvinceCode();
        int cityCode=selectedCity.getCityCode();
        String address="http://guolin.tech/api/china/"+provinceCode+"/"+cityCode;
        queryFromServer(address,"county");
    }
}
    /*
    根据传入的地址和类型从服务器上查询省市县数据
     */
    private void  queryFromServer(String adress,final String type){
        showProgressDialog();
        HttpUtil.sendOKHttpRequest(adress, new Callback() {
            @Override
            public void onFailure(@NotNull Call call, @NotNull IOException e) {
                closeProgressDialog();
                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(context, "加载失败", Toast.LENGTH_SHORT).show();
                    }
                });
            }

            @Override
            public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
                String responseText=response.body().string();
                boolean result=false;
                if ("province".equals(type)){
                    result= Utility.handleProvinceResponse(responseText);
                }else  if ("city".equals(type)){
                    result=Utility.handleCityResponse(responseText,selectedProvince.getId());
                }else if ("county".equals(type)){
                    result=Utility.handleCountyResponse(responseText,selectedCity.getId());
                }
                if (result){
                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            closeProgressDialog();
                            if ("province".equals(type)){
                               queryProvinces();
                            }else  if ("city".equals(type)){
                            queryCities();
                            }else if ("county".equals(type)){
                                queryCounties();
                            }
                        }
                    });
                }
            }
        });
    }
    /*
    显示进度对话框
     */
    private void showProgressDialog(){
        if (progressDialog==null){
            progressDialog=new ProgressDialog(getActivity());
            progressDialog.setMessage("正在加载...");
            progressDialog.setCanceledOnTouchOutside(false);
        }
        progressDialog.show();
    }
    /*
    关闭进度对话框
     */
    private  void closeProgressDialog(){
        if (progressDialog!=null){
            progressDialog.dismiss();
        }
    }
    private void initView( ) {
        titleText = (TextView) view.findViewById(R.id.title_text);
        backButton = (Button) view.findViewById(R.id.back_button);
        listView = (ListView) view.findViewById(R.id.list_view);
    }
}
